Clinical Implication of Bactibilia in Moderate to Severe Acute

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Clinical Implication of Bactibilia in Moderate to Severe Acute www.nature.com/scientificreports OPEN Clinical implication of bactibilia in moderate to severe acute cholecystitis undergone cholecystostomy following cholecystectomy Je Ho Yoon1, Kwang Yeol Paik1*, Hoo Young Chung2 & Ji Seon Oh1 There is little evidence of clinical outcome in using antibiotics during the perioperative phase of acute cholecystitis with bactibilia. The aim of current study is to examine the efect of bactibilia on patients with acute cholecystitis and their perioperative clinical outcome. We performed a retrospective cohort analysis of 128 patients who underwent cholecystectomy for acute cholecystitis with moderate and severe grade. Patients who were positive for bactibilia were compared to bactibilia-negative group in following categories: morbidity, duration of antimicrobial agent use, in-hospital course, and readmission rate. There was no diference in morbidity when patients with bactibilia (n = 70) were compared to those without (n = 58) after cholecystectomy. The duration of antibiotics use and clinical course were also similar in both groups. In severe grade AC group (n = 18), patients used antibiotics and were hospitalized for a signifcantly longer period of time than those in the moderate grade AC group. The morbidity including surgical site infection, and readmission rates were not signifcantly diferent in moderate and severe grade AC groups. In moderate and severe AC groups, bactibilia itself did not predict more complication and worse clinical course. Antibiotics may be safely discontinued within few days after cholecystectomy irrespective of bactibilia when cholecystectomy is successful. Te course and outcome of laparoscopic cholecystectomy (LC) is signifcantly afected by the severity of infam- mation. It is known that prophylactic antibiotics do not prevent infections in patients with mild grade acute cholecystitis (AC) undergoing laparoscopic cholecystectomy 1. In terms of using postoperative antibiotics, with the intent to reduce subsequent infection sources, rationale for this includes the fnding that bacteria in gallblad- der (GB) bile is cultured in 40% to 60% of cases 2,3. In moderate to severe grade AC, clinical course of patients sometimes can be unstable due to the septic condition and it may correlate directly with microorganism in GB, which prolong the use of antibiotics. Nevertheless, the clinical implication of bactibilia remains undefned with the scarcity of scientifc evidence. When mild AC is managed with cholecystectomy and the source of infection is controlled completely, prolonged postoperative antibiotic therapy is not warranted4. In patients with severe AC, there is no consensus for the use of antibiotics in the postoperative phase of AC. Te optimal duration of antibiotic therapy following percutaneous cholecystostomy (PC) is also unknown for PC operated in patients with high risk AC 5. Te controversy remains over whether bactibilia induced by biliary drainage is associated with postoperative infectious complication. Overall, there is little evidence for the use of antibiotics and surgical outcomes during the perioperative phase of AC with regards to bactibilia. We hypothesize that there is diference regarding the use of antibiotics and the surgical outcomes during the perioperative phase of AC with regards to bactibilia. Te aim of current study is to examine the association between bactibilia and the clinical outcome of cholecystectomy in diferent grades of AC. 1Department of Surgery, Yeoiudo St. Mary’s Hospital, The Catholic University of Korea College of Medicine, #10,63-ro,Yeongdengpo-gu, Seoul 07345, South Korea. 2Department of Family Medicine, Yeoiudo St. Mary’s Hospital, The Catholic University of Korea, #10,63-ro,Yeongdengpo-gu, Seoul 07345, South Korea. *email: [email protected] Scientifc Reports | (2021) 11:11864 | https://doi.org/10.1038/s41598-021-91261-9 1 Vol.:(0123456789) www.nature.com/scientificreports/ Methods Patients inclusion criteria. High-risk patients were identifed based on the following inclusion criteria: admission into General Surgery for the treatment of AC; American Society of Anesthesiology (ASA) Grade ≥ III and Grade II and III AC according to Tokyo guideline 18 (TG18)6. Severe AC (grade III) was defned as being accompanied by dysfunctions in any one of the following organs or systems: cardiovascular dysfunction (hypo- tension requiring treatment with dopamine > 5 μg/kg per min, or any dose of dobutamine), neurological dys- function (decreased level of consciousness), respiratory dysfunction (PaO2:FIO2ratio < 300), renal dysfunction (oliguria, creatinine > 2.0 mg/dL [to convert to μmol/L, multiply by 88.4]), hepatic dysfunction (> 3 prothrombin time: international normalized ratio > 2) or hematologic dysfunction (platelet count < 100,000/μL). Moderate acute calculous cholecystitis (grade II) is defned as being accompanied by any of the following conditions: white blood cell count greater than 18,000/μL, a palpable tender mass in the right upper abdominal quadrant, duration of complaints for more than 72 h, or marked local infammation (gangrenous cholecystitis, perichol- ecystic abscess, hepatic abscess, biliary peritonitis, or emphysematous cholecystitis). All LC procedures were performed by a single surgeon (American position and three port method), specialized in performing hepato- biliary procedures. Te Institutional Review Board of Yeouido St.Mary’s Hospital approved the current study. A written informed patient consent was waived by the Catholic University, Yeouido St.Mary’s Hospital Institu- tional Review Board due to the retrospective nature of the study. All methods were conducted in accordance with relevant guidelines and regulations. PC and LC. All patients underwent PC in preparation for safe cholecystectomy and for bile culture. PC was performed via transhepatic route. Ultrasound-guided GB puncture was performed using an 18-gauge needle. Afer a successful puncture, a 0.035-in. wire was inserted, and the needle was removed. Finally, an 8.5-Fr pig tail catheter was inserted into the GB, using the Seldinger technique. All procedures were performed by our special- ized interventional radiologist team. Considerations for discharge included stable clinical condition, tolerable pain (using oral analgesics as needed) and proper resumption of oral diet. We performed LC when symptom and sign derived from underlying disease and septic condition were completely improved irrespective of hos- pitalization. Bacteria evaluation and antibiotic treatment. As a surveillance bile culture, bile specimens were col- lected at the time of PC procedure. All patients received appropriate antibiotic therapy until cholecystectomy and the treatment was discontinued afer surgery within a few days. As soon as causative organisms had been identifed, antibiotic therapy was adjusted to a narrower spectrum antimicrobial agent based on the specifc micro-organism(s) and the results of sensitivity testing. However, antimicrobial therapy could be discontinued prior to identifying the causative organism because it requires several days for bacterial culture to be determined in practical feld. Second or third generation cephalosporin were used as initial antibiotic therapy for all patients irrespective of bile culture from PC. Te subsequent choice of antibiotics depended on incubated micro-organ- ism and the presence of drug resistance. Endpoint. Outcomes used for analysis included demographics, clinical data such as ASA grade, TG18 grade, preoperative bile drainage or endoscopic intervention and prior surgical history. Te primary endpoint was occurrence of morbidity which means surgical or medical complications including surgical site infection (SSI). Te secondary endpoints were the duration of antibiotic usage pre- and post-operation, hospitalization period, postoperative stay (from the time of the index surgery to discharge), and the rate of readmission (admission afer cholecystectomy). Statistical analysis. Statistical analysis was performed using SPSS sofware (version 24.0; IBM SPSS Sta- tistics, Armonk, NY, USA). Student’s t-test or Pearson’s chi-squared test and Fisher’s exact test were used for between-group comparisons, as appropriate for the data type and distribution. For all analyses, a P-value < 0.05 was considered as statistically signifcant. Results Patients. From January 2014 to December 2018, 455 patients with AC underwent LC in the Department of Surgery at the xxx University of Korea, xx Hospital. Among them, 164 high-risk patients who were initially intended for cholecystectomy underwent PC. Of 164 patients, 8 patients who could not receive surgery due to their clinical state and 4 patients who underwent open cholecystectomy were excluded. Ten, 24 patients without culture report (21.5%) were also excluded. Finally, 128 patients were enrolled in the study. Patients were divided into two groups depending on the presence of bactibilia and to the severity grade as moderate and severe grade according to the TG18. Microorganism. Out of 128 patients with AC who underwent LC, there were 70 (54.7%) bactibilia patients and 58 (45.3%) bile culture-negative patients. Tirty bacteria were identifed in 70 patients and 36 (51.4%) patients were infected by single gram negative bacilli (GNB) and 10 patients showed concomitantly infected multi-GNB. Of all GNB, Escherichia coli was the most frequently isolated bacteria (n = 24), followed by Klebsiella pneumonia (n = 8) and Enterobacter (n = 6). Gram positive cocci (GPC) occupied 27.1% (n = 19) of all patients with bactibilia
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